On graphite and the variations in the ultraviolet extinction curve

1992 ◽  
Vol 386 ◽  
pp. 627 ◽  
Author(s):  
Per A. Aannestad
Keyword(s):  
Extinction Curve ◽  
Ultraviolet Extinction

The Ultraviolet Extinction Curve for Circumstellar Dust Formed in the Hydrogen‐poor Environment of V348 Sagittarii

1997 ◽  
Vol 476 (2) ◽  
pp. 865-869 ◽  
Author(s):  
John S. Drilling ◽  
James H. Hecht ◽  
Geoffrey C. Clayton ◽  
Janet Akyuz Mattei ◽  
Arlo U. Landolt ◽  
...  
Keyword(s):  
Extinction Curve ◽  
Circumstellar Dust ◽  
Ultraviolet Extinction

scholarly journals Ultraviolet photometry of stars from OSO II

1970 ◽  
Vol 36 ◽  
pp. 139-139
Author(s):  
Kenneth L. Hallam
Keyword(s):  
Wide Band ◽  
Extinction Curve ◽  
Magnitude Effect ◽  
Flux Measurements ◽  
Ultraviolet Extinction ◽  
Good Agreement

Ultraviolet stellar fluxes from 1500 to 3200 Å were from February through August 1965 on OSO II. A 15-cm diameter Gregorian telescope with a stepped grating spectrophotometer provided flux measurements in ten adjacent 180 Å wide band passes.By comparing fluxes of stars showing B-U color excesses smaller than 0.19 and larger than 0.26, an ultraviolet extinction curve has been derived, which agrees with others which have been published as far as the magnitude effect is concerned, but the shape differs somewhat, the slope at 1/λ = 3.8 μ−1 being somewhat greater than at 1/λ = 5.0 μ−1.If the stars' fluxes are corrected for reddening, it is found that there is a good agreement between observation and models for stars earlier than B3, but that many of the later type stars have a residual apparently intrinsic reddening.

A New Measurement of the Average Far‐Ultraviolet Extinction Curve

2002 ◽  
Vol 566 (1) ◽  
pp. 267-275 ◽  
Author(s):  
T. P. Sasseen ◽  
M. Hurwitz ◽  
W. V. Dixon ◽  
S. Airieau
Keyword(s):  
Extinction Curve ◽  
Ultraviolet Extinction ◽  
Far Ultraviolet

scholarly journals The Ultraviolet Extinction Curve of Intraclump Dust in Taurus (TMC‐1): Constraints on the 2175 A Bump Absorber

2004 ◽  
Vol 602 (1) ◽  
pp. 291-297 ◽  
Author(s):  
D. C. B. Whittet ◽  
S. S. Shenoy ◽  
Geoffrey C. Clayton ◽  
Karl D. Gordon
Keyword(s):  
Extinction Curve ◽  
Ultraviolet Extinction

scholarly journals Discussion following the Reports by Greenberg and Stecher

1970 ◽  
Vol 39 ◽  
pp. 322-335
Author(s):  
H. C. van de Hulst
Keyword(s):  
Grain Orientation ◽  
Extinction Curve

The material of this Discussion has been rearranged in five sections: 1. Grain Orientation; 2. The Diffuse Galactic Light; 3. The Extinction Curve in the Far UV; 4. Formation and Destruction of Grains; 5. The OH Molecule. Except for rearranging, very few changes have been made.

scholarly journals What can the occult do for you?

2016 ◽  
Vol 11 (S321) ◽  
pp. 248-250
Author(s):  
B. W. Holwerda ◽  
W. C. Keel
Keyword(s):  
Interstellar Dust ◽  
Probability Function ◽  
Great Accuracy ◽  
Extinction Curve ◽  
Clear Understanding ◽  
Fine Scale ◽  
Grain Composition ◽  
Field Unit ◽  
Integral Field

AbstractInterstellar dust is still a dominant uncertainty in Astronomy, limiting precision in e.g., cosmological distance estimates and models of how light is re-processed within a galaxy. When a foreground galaxy serendipitously overlaps a more distant one, the latter backlights the dusty structures in the nearer foreground galaxy.Such an overlapping or occulting galaxy pair can be used to measure the distribution of dust in the closest galaxy with great accuracy. The STARSMOG program uses Hubble to map the distribution of dust in foreground galaxies in fine (<100 pc) detail. Integral Field Unit (IFU) observations will map the effective extinction curve, disentangling the role of fine-scale geometry and grain composition on the path of light through a galaxy.The overlapping galaxy technique promises to deliver a clear understanding of the dust in galaxies: geometry, a probability function of dimming as a function of galaxy mass and radius, and its dependence on wavelength.

FUSEMeasurements of Far‐Ultraviolet Extinction. II. Magellanic Cloud Sight Lines

2005 ◽  
Vol 630 (1) ◽  
pp. 355-367 ◽  
Author(s):  
Stefan I. B. Cartledge ◽  
Geoffrey C. Clayton ◽  
Karl D. Gordon ◽  
Brian L. Rachford ◽  
B. T. Draine ◽  
...  
Keyword(s):  
Magellanic Cloud ◽  
Ultraviolet Extinction ◽  
Far Ultraviolet
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